Many traditional children's games are of fairly recent origin. For example, the game of conkers dates back no further than the 19th century, making it no more than about 10 generations old.
The reliability of claims that hopscotch dates back to the Roman empire has been questioned, and claims that the skipping rope was used in ancient Phoenicia, Egypt or China may be similarly fanciful.
What is the oldest traditional children's game? By that I mean, what game played by children today, passed down by oral tradition, verifiably dates back furthest?